工具栏未出现在 Lollipop 之前的设备上。我正在使用带工具栏的抽屉布局。相同的工具栏适用于其他 Activity ，但与抽屉布局一起使用时则不然。
带有抽屉布局和工具栏的 Activity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_screen);
{
/*supportChatImageButton = (ImageButton) findViewById(R.id.homeSupportChatImageButton);
orderImageButton = (ImageButton) findViewById(R.id.homeOrderImageButton);*/
headerTextView = (TextView) findViewById(R.id.homeHeaderTextView);
slidingTabLayout = (SlidingTabLayout) findViewById(R.id.homeSlidingTabLayout);
viewPager = (ViewPager) findViewById(R.id.homeViewPager);
headerBackgroundImageView = (ImageView)findViewById(R.id.homeHeaderBackgroundImageView);
mainContentLayout = (FrameLayout) findViewById(R.id.homeScreenMainContentLayout);
hamburgerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
hamburgerLinearLayout = (LinearLayout) findViewById(R.id.hamburgerProfileLayout);
hamburgerListView = (ListView) findViewById(R.id.hamburgerListView);
hamburgerMenu = (RelativeLayout) findViewById(R.id.hamburgerMenu);
GetHamburgerListItems();
HamburgerListAdapter hamburgerListAdapter = new HamburgerListAdapter(this, hamburgerListItems);
hamburgerListView.setAdapter(hamburgerListAdapter);
userProfileImageView = (ImageView) findViewById(R.id.userProfileImageView);
userProfileNameTextView = (TextView) findViewById(R.id.userProfileNameTextView);
if(StorageManager.read(this, "userProfile", new TypeToken<UserProfile>() {}.getType()) != null) {
UserProfile userProfile = (UserProfile) StorageManager.read(this, "userProfile", new TypeToken<UserProfile>() {}.getType());
userProfileNameTextView.setText(userProfile.getFullName());
}
else {
userProfileNameTextView.setText("Login / Sign up");
}
Typeface typeface = Typeface.createFromAsset(this.getAssets(), "fonts/GothamRnd-Medium.otf");
slidingTabLayout.setTypeface(typeface);
slidingTabLayout.setTextColor("#FFFFFF");
}
if(Utilities.IsCitySelected(this)) {
selectedCity = Utilities.GetSelectedCity(this);
}
else {
Intent intent = new Intent(HomeScreenActivity.this, ErrorInternetActivity.class);
intent.putExtra("error", "error");
startActivity(intent);
finish();
}
toolbar = (Toolbar) findViewById(R.id.main_toolbar);
toolbar.setNavigationIcon(R.drawable.ic_action_image_dehaze);
toolbar.inflateMenu(R.menu.home_screen_menu);
toolbar.setBackgroundColor(Color.TRANSPARENT);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, hamburgerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu();
syncState();
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
invalidateOptionsMenu();
syncState();
}
};
hamburgerLayout.setDrawerListener(actionBarDrawerToggle);
hamburgerLayout.setDrawerListener(this);
hamburgerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
publ
ic void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
SelectItemFromDrawer(position);
}
});
hamburgerLinearLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(Utilities.IsUserLoggedIn(HomeScreenActivity.this)) {
hamburgerLayout.closeDrawer(hamburgerMenu);
isLinkClicked = true;
position = 2;
}
else {
hamburgerLayout.closeDrawer(hamburgerMenu);
isLinkClicked = true;
position = 3;
}
}
}
});
Activity - XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".HomeScreenActivity">
<FrameLayout
android:id="@+id/homeScreenMainContentLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
layout="@layout/main_toolbar"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.6">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/homeHeaderBackgroundImageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="42dp"
android:layout_alignParentTop="true"
android:layout_marginTop="12dp"
android:gravity="right">
<!--<ImageButton
android:id="@+id/homeSupportChatImageButton"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginRight="20dp"
android:background="@drawable/ic_help"
android:visibility="visible" />
<ImageButton
android:id="@+id/homeOrderImageButton"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginRight="16dp"
android:background="@drawable/ic_menu_orders" />-->
</LinearLayout>
<com.misc.TextView
android:id="@+id/homeHeaderTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:text="@string/home_screen_header_text"
android:textColor="@color/white"
android:textSize="24sp"
android:textStyle="bold"
app:fontName="@string/gotham_bold_reg" />
<com.misc.SlidingTabLayout
android:id="@+id/homeSlidingTabLayout"
fontPath="fonts/GothamRnd-Medium.otf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:paddingTop="10dp"></com.misc.SlidingTabLayout>
</RelativeLayout>
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.40"
android:background="#FFFFFF">
<android.support.v4.view.ViewPager
android:id="@+id/homeViewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"></android.support.v4.view.ViewPager>
</LinearLayout>
</LinearLayout>
</FrameLayout>
<!-- The navigation drawer -->
<RelativeLayout
android:id="@+id/hamburgerMenu"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start">
<!-- Profile Box -->
<LinearLayout
android:id="@+id/hamburgerProfileLayout"
android:layout_width="match_parent"
android:layout_height="144dp"
android:background="@color/lo_orange"
android:gravity="center_vertical"
android:orientation="vertical">
<ImageView
android:id="@+id/userProfileImageView"
android:layout_width="56dp"
android:layout_height="56dp"
android:layout_marginLeft="16dp"
android:scaleType="fitXY"
android:src="@drawable/ic_person_blue" />
<com.misc.TextView
android:id="@+id/userProfileNameTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginLeft="16dp"
app:fontName="@string/gotham_medium_reg"
android:textSize="14sp"
android:text=""
android:textColor="#FFFFFF"/>
</LinearLayout>
<!-- List of Actions (pages) -->
<ListView
android:id="@+id/hamburgerListView"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_below="@id/hamburgerProfileLayout"
android:background="#FFFFFF"
android:choiceMode="singleChoice" />
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
main_toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/lo_orange"
android:minHeight="?attr/actionBarSize"
android:fitsSystemWindows="true"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
android:elevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<com.misc.TextView
android:id="@+id/toolBarTitleTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:fontName="@string/gotham_medium_reg"
android:maxLines="2"
android:textSize="16sp"
android:textColor="#FFFFFF"/>
<com.misc.TextView
android:id="@+id/toolBarSubTitleTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:fontName="@string/gotham_light_reg"
android:maxLines="1"
android:textSize="12sp"
android:visibility="gone"
android:textColor="#FFFFFF"/>
</LinearLayout>
</android.support.v7.widget.Toolbar>
style.xml
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="android:textColorHintInverse">@color/lo_orange</item>
<!--<item name="colorPrimaryDark">@color/dark_orange</item>-->
<item name="colorPrimary">@color/lo_orange</item>
<item name="colorAccent">@color/lo_orange</item>
<!-- API 14 theme customizations can go here. -->
<item name="android:windowActionBarOverlay">true</item>
<!-- Support library compatibility -->
<item name="windowActionBarOverlay">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
</style>
最佳答案
这是一个常见问题，在 Lollipop 或更高版本上进行测试时变得不太明显。
当使用标准布局(例如 FrameLayout、RelativeLayout 等)时，默认行为是 subview 按照添加或膨胀的顺序绘制。
修复看起来与此类似:
<FrameLayout>
<!-- Content will be drawn first - below the toolbar. -->
<FrameLayout android:id="@+id/main_content" />
<!-- Toolbar will be drawn next - above the content. -->
<android.support.v7.widget.Toolbar android:id="@+id/toolbar" />
</FrameLayout>
然而，自从 Lollipop 以来，android:elevation 属性可以覆盖此行为。由于高程定义了沿 Z 轴的精确位置，具有较高高程值的 View 将绘制在具有较低高程值的 View 之上。
关于android - Lollipop 之前的设备中未出现工具栏，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32668480/